A Custom Carousel With Vuejs

vue2-custom-carousel

The simplest and most lightweight carousel ever, made with flexbox and CSS “scroll-snap-type” and “scroll-behavior” for smooth scrolling.

Example

Vue2-custom-carousel does not provide default CSS/template themes, you must build them yourself and wrap them up in another component using your own styles.

  <Carousel class="carousel" >
    <template>
      <Item v-for="(item, index) in items"
        :key="index"
        v-bind="item"
      />
    </template>
    <template v-slot:pagination='{active, number, scroll}'>
      <div class="dot" :class="{active}"
        @click="scroll"
      ></div>
    </template>
  </Carousel>

In this example, we use the functional component to display the items and the pagination template slot to display the dots, the template provides the active boolean which we use to differentiate the active element. The carousel uses scroll-behavior: smooth; for smooth scrolling.

We can easily add button navigators using this code and doing the proper positioning.

<template v-slot:left='{scroll, show}'>
  <Button v-if="show"
    @click.native="scroll"
  />
</template>
<template v-slot:right='{scroll, show}'>
  <Button v-if="show" class="right"
    @click.native="scroll"
  />
</template>

.Button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%) rotate(-180deg);
  right: unset;
  left: -20px;
}

.right {
  transform: unset;
  left: unset;
  right: -20px;
}

Pagination Template Slot Props

Property	Description
number	The current index.
scroll	Scroll trigger function, you should use it on the @click.native=‘scroll’ event.
active	Will be true at the active navigation.

Navigation Template Slot Props

Property	Description
show	Will be false on the corners of the carousel.
scroll	Scroll trigger function, you should use it on the @click.native=‘scroll’ event.

Component Props

Property	Description
value/v-model	Sets and updates the current page. The current page will never be bigger than the number of pages or less than 0, that is, if set to a value greater than the number of carousel pages, values settles itself to the maximum value, value doesn’t respond to negative values, instead, it sets itself back to 0.

Component Methods

Method	Parameters	Return Value	Description
scroll	(paginationIndex: number)	finalPageIndex: number	Goes to the given page index. The return value will never be bigger than the number of pages or less than 0, that is, if set to a value greater than the number of carousel pages, it settles itself to the maximum value, scroll doesn’t respond to negative values, instead, it sets itself back to 0.
next	nothing	nothing	Goes to the next page.
previous	nothing	nothing	Goes to the previous page.
focus	(elm: HTMLElement)	nothing	Focuses on the element.

Component Events

calculated event

Runs every time the component calculates the data, runs on mounted, updated, on window resize, and on container scroll event.

Data

{
  numberOfPages: number;
  activePage: number;
  showRightNavigation: boolean;
  showLeftNavigation: boolean;
}

trigger event

Runs every time the scroll changes manually, this can happen when clicking in one of the pagination options, when clicking on the navigation buttons or whenever the component methods are used.

Data

newScroll: number;

Flexbox Usage

The items are by default centralized using flexbox, this means width and display won’t work as expected and you might want to use flex-shrink: 0;, you can overwrite the flexbox styles this way:

<template>
  <Carousel>
  ...
  </Carousel>
</template>

<style>

._CustomCarousel .scroll-wrapper {
  justify-content: flex-start;
}

<style>

The same applies to the pagination wrapper:

<template>
  <Carousel>
  ...
  </Carousel>
</template>

<style>

._CustomCarousel .pagination {
  align-items: flex-start;
  padding: 40px;
}

<style>

Carousel Snap

The carousel .wrapper container uses scroll-snap-type: x mandatory;, this means you can easily snap your items by adding scroll-snap-align: center;:

You can find more information here.

.Item {
  scroll-snap-align: start;
}

Download Details:

Author: Gustavodacrvi

Source Code: https://github.com/Gustavodacrvi/vue2-custom-carousel

#vuejs #vue #javascript